Sliding Clutch Carrier Patents (Class 74/371)
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Patent number: 9249839Abstract: A shifting device of a motor vehicle transmission having a driveshaft (2) in the form of a hollow shaft with radial bores (5, 6, 7, 8). At least one drive output element (3) is arranged on the driveshaft (2), a shifting element (4) is arranged to move axially within the hollow shaft (2), and coupling elements, in the form of balls (9, 10, 11, 12), move radially within the radial bores (5, 6, 7, 8; 24). The drive output element (3) can be coupled to and decoupled from the driveshaft (2) by axial displacement of the shifting element (4) and radial displacement of the balls (9, 10, 11, 12). The shifting element is in the form of a shifting piston (4) and the hollow shaft (2) is in the form of a shifting cylinder (2aa).Type: GrantFiled: March 3, 2014Date of Patent: February 2, 2016Assignee: ZF Friedrichshafen AGInventors: Georg Ege, Rainer Novak
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Patent number: 9010207Abstract: A transmission includes an input shaft to receive the rotation of an engine, drive gears attached to the input shaft so as to freely rotate, an output shaft to output rotation following a gear shift, driven gears that are attached to the output shaft so as to freely rotate and mesh with the drive gears, an engagement mechanism to fix a gear to be used in a gear shift, from among the drive gears, to the input shaft to be incapable of relative rotation prior to a gear shift, and a selector mechanism to fix, during the gear shift, the driven gear of a corresponding gear position, which meshes with the drive gear fixed to the input shaft by the engagement mechanism, to the output shaft to be incapable of relative rotation.Type: GrantFiled: July 24, 2013Date of Patent: April 21, 2015Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Yasuyuki Ukon, Keisuke Shibuya
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Publication number: 20140041473Abstract: A transmission includes an input shaft to receive the rotation of an engine, drive gears attached to the input shaft so as to freely rotate, an output shaft to output rotation following a gear shift, driven gears that are attached to the output shaft so as to freely rotate and mesh with the drive gears, an engagement mechanism to fix a gear to be used in a gear shift, from among the drive gears, to the input shaft to be incapable of relative rotation prior to a gear shift, and a selector mechanism to fix, during the gear shift, the driven gear of a corresponding gear position, which meshes with the drive gear fixed to the input shaft by the engagement mechanism, to the output shaft to be incapable of relative rotation.Type: ApplicationFiled: July 24, 2013Publication date: February 13, 2014Applicant: Fuji Jukogyo Kabushiki KaishaInventors: Yasuyuki Ukon, Keisuke Shibuya
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Patent number: 8245589Abstract: A device (4) for actuating a component mounted to rotate on a shaft (3), preferably a gearwheel (3A to 3D) made as a loose wheel of a transmission device (1). The component can be shifted by an engaging device (4A, 4B) that includes at least one electric actuator (5, 17) to an engaged condition in which the component is connected in a rotationally fixed manner to the shaft (3), and such that the component can be acted upon with the actuation force needed for its engagement or disengagement from inside the shaft (3) outwardly. The electric actuator (5, 17) is at least partially arranged inside the shaft (3).Type: GrantFiled: October 2, 2007Date of Patent: August 21, 2012Assignee: ZF Friedrichshafen AGInventors: Mark Mohr, Matthias Reisch, Ralf Dreibholz
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Patent number: 8171814Abstract: A transmission system and method for operating the transmission system, where the transmission system includes a selector assembly arranged to select between gear ratios instantaneously without substantial power interruption. The selector assembly includes first and second sets of engagement members and an actuator system. The actuator system may have a first actuator member for moving the first set of engagement members, a second actuator member for moving the second set of engagement members, a first actuator device for actuating the first actuator member and a second actuator device for actuating the second actuator member independently of the first actuator device.Type: GrantFiled: May 11, 2007Date of Patent: May 8, 2012Assignee: Zeroshift LimitedInventors: William Wesley Martin, Anthony Joseph Child
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Patent number: 7997159Abstract: The present invention broadly comprises a gear selector assembly including a tube with at least one engagement feature, arranged to be disposed within a drive shaft for a transmission, the transmission including at least one gear and the drive shaft including at least one gear actuation assembly; and a differential rotation element coupled with the tube and arranged to be coupled with the drive shaft so that the tube is differentially rotatable with respect to the drive shaft. The tube is arranged to differentially rotate such that the engagement feature engages the actuation assembly and the transmission engages a respective gear from the at least one gear. The assembly includes a means for displacing a portion of the differential rotation element such that the tube axially and rotationally displaces with respect to the drive shaft. The portion axially and rotationally engages with an interface element to controllably position the tube.Type: GrantFiled: October 25, 2007Date of Patent: August 16, 2011Assignee: Schaeffler KGInventors: Jeffrey Hemphill, Mavinkal Jayaram, Brian Lee, Robert Southam
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Patent number: 7905803Abstract: In a V-belt continuously variable transmission (CVT) of an ATV, a movable sheave half of a primary sheave is disposed on the outer side in the vehicle width direction with respect to a fixed sheave half, and a sheave drive mechanism for controlling the respective groove widths of the primary sheave and a secondary sheave through a driving force by an electric motor is located on the outer side in the vehicle width direction with respect to the movable sheave half of the primary sheave. A footboard of the ATV is located on the outer side of the V-belt CVT in the vehicle width direction and below a primary sheave shaft and a secondary sheave shaft. A portion of the electric motor is located above and in front of the primary sheave shaft as viewed in the sheave shaft direction. A straddle-type vehicle having the compact, yet durable V-belt continuously variable transmission achieves a speed change operation highly responsive to the vehicle running condition.Type: GrantFiled: August 24, 2006Date of Patent: March 15, 2011Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Shigehiro Mochizuki, Kazuhiko Izumi
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Patent number: 7597638Abstract: A transmission including an input cog assembly mounted to an input shaft and an output cog assembly mounted to an output shaft. The input and output cog assemblies include a plurality of varying diameter input and output cogs, respectively, arranged sequentially. A chain links a pair of input and output cogs for transmitting power from the input cog assembly to the output cog assembly. The chain, in operation, has a high-tension side and a low-tension side. A derailleur is engageable with the low-tension side of the chain to laterally urge the chain from a current output cog to a destination output cog.Type: GrantFiled: August 31, 2004Date of Patent: October 6, 2009Assignee: SRAM, LLCInventor: James A. Cooke
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Patent number: 7556576Abstract: In a V-belt continuously variable transmission (CVT), a sheave drive mechanism includes a movable tube coupled to a movable sheave half of a primary sheave so as to be rotatable with respect thereto and axially movable together therewith, a fixed tube disposed internally of and coaxially with the movable tube, and a ball screw mechanism provided between the fixed tube and the movable tube. The sheave drive mechanism further includes an outer peripheral wall arranged to cover the area from a fixed end of the fixed tube to the outer periphery of the movable tube, an oil seal provided between the movable tube and the outer peripheral wall to seal an internal space for enclosing the working surface of the ball screw mechanism, and a communication path for communication between the internal space and the outside of the outer peripheral wall. The V-belt (CVT) has a smooth feed operation of the ball screw mechanism in the sheave drive mechanism and has a high durability attained by waterproofing.Type: GrantFiled: August 24, 2006Date of Patent: July 7, 2009Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Shigehiro Mochizuki, Kazuhiko Izumi
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Patent number: 6942435Abstract: A machine tool, particularly a hand machine tool, including an indexing mechanism which is switchable by an actuating element via at least one coupling element, and including at least one spring element arranged in the flux of force between the actuating element and the coupling element. The spring element in the flux of force from the actuating element in the direction of the coupling element is fixedly connected to a first component in at least two actuating directions, and in the opposite direction of the flux of force, is fixedly connected to a second component at least in the two actuating directions.Type: GrantFiled: January 30, 2001Date of Patent: September 13, 2005Assignee: Robert Bosch GmbHInventors: Hermann Schaible, Robert Simm, Reto Michel
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Patent number: 6898993Abstract: A transmission for a vehicle which can be applied to a shift mechanism where a shaft itself is rotated and having a simple configuration and axial miniaturization. A transmission for a vehicle in which a plurality of transmission shafts are provided each of which supports a plurality of transmission gears in a row and are arranged in parallel so that mutually corresponding transmission gears are engaged and transmission gears rotating in synchronization with the hollow shaft are selectively switched. Every transmission shaft is provided with a clutch mechanism provided between the hollow shaft and each transmission gear for fitting the hollow shaft and each transmission gear or releasing the fitting and a clutch actuator housed in the hollow shaft and the clutch mechanism selectively fits any transmission gear to the hollow shaft according to the axial position of the clutch actuator.Type: GrantFiled: January 29, 2003Date of Patent: May 31, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Shinya Matsumoto, Yoshiaki Tsukada, Masaie Kato
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Patent number: 6830208Abstract: A fishing reel has high speed and low speed gears that are indexed to one another. They are free to rotate relative to one another on a gear shaft, but cannot move axially relative to one another. This gear set can be translated along the gear shaft, into engagement with two separate drive means; one for the low speed gear and one for the high-speed gear.Type: GrantFiled: May 1, 2003Date of Patent: December 14, 2004Assignee: Penn Fishing Tackle Mfg. Co.Inventor: Peter T. Datcuk, Jr.
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Patent number: 6789441Abstract: A transmission between a drive member and a drive shaft (1) of an automotive engine comprising, in a housing (2), a friction clutch constituted by at least one rotatable driving element (3) and at least one driven element coming into bearing contact with variable gripping to obtain a variation of the couple transmitted to the output shaft (1) under the action of a control device that at least partially projects from the housing (2). The control device is automatically actuated by two separate inertial forces, one, generated by the driver of the engine, tending to bring together the drive element (3) and the driven element when the resistance to forward movement of the engine increases, the other, generated by the mass of the engine tending to uncouple the drive element (3) and driven element when the resistance to advance of the engine decreases.Type: GrantFiled: August 28, 2002Date of Patent: September 14, 2004Assignee: France ReducteursInventor: Robert Blanchard
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Publication number: 20040050197Abstract: The invention relates to an automated transmission device with torque transfer, in particular for a motor vehicle, comprising an input shaft (18) that supports drive pinions (20), each of which is engaged with a driven pinion (22) that is mounted freely rotating on a output shaft (12); controlled unidirectional locking mechanisms (24) which are mounted between the shaft (12) and the driven pinions (22); and mechanical means for activating said mechanisms (24) in a positive manner comprising at least one cam (26) which moves translation inside the driven shaft (12).Type: ApplicationFiled: September 30, 2003Publication date: March 18, 2004Inventor: Pascal Thery
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Patent number: 6694836Abstract: An all-terrain vehicle includes a variable-speed V-belt drive disposed on one side of a crankcase of an engine, a V-belt drive cover covering the variable-speed V-belt drive, a gear transmission of transmitting a power of the engine in cooperation with the variable-speed V-belt drive, and a speed sensing device. The speed sensing device includes a speed sensor of measuring a rotating speed of a member which transmits the power of the engine to the wheels. The speed sensor is disposed right under the V-belt drive cover.Type: GrantFiled: January 22, 2002Date of Patent: February 24, 2004Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yuichi Kawamoto, Kiyohito Takano
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Patent number: 6450054Abstract: A power transmission mechanism includes a cluster gear formed integrally with, or fixed to an input shaft, and an output shaft arranged parallel to the input shaft and rotatably supporting gears in continuous meshing engagement with pinions of the cluster gear. A control bar, coaxial with the output shaft, defines a axial slot interconnected with radial slots on the output shaft. Locking bolts located in the radial slots and guided by a track, alternately move radially into and out of engagement with the selected gear.Type: GrantFiled: January 9, 2001Date of Patent: September 17, 2002Inventor: Tianfu Li
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Patent number: 6435057Abstract: A gear constructional unit with a gear housing is provided. In order to make the effective diameter of the inner gear elements greater, as well as to ensure a simple assembly and exchangeability of the individual gear elements, for example coupling arrangements and planetary wheel sets, there are provided at least two bar-form guide elements, which extend, as viewed in an axial direction, over at least a part of the axial extent of the cylindrical inner space, on which a large number of gear elements are mounted in fixed position with respect to the housing. The bar-form guide elements are located adjacent to the cylindrical inner space, outside of a zone having the greatest dimension of the cylindrical inner space relative to the gear housing dimension, and are arranged in recesses in the gear housing which are connected with the inner space.Type: GrantFiled: August 16, 2000Date of Patent: August 20, 2002Assignee: Voith Turbo GmbH & Co. KGInventors: Tillmann Korner, Achim Paul Schieder
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Patent number: 6325315Abstract: A change-speed construction for a fishing rod includes a hollow cylindrical shaft, and a control shaft that is movable within the cylindrical shaft between an outer position and an inner position. A key member is carried on a carrier, which is disposed axially and movably within the cylindrical shaft. A coiled small compression spring has two ends that are fastened respectively to the carrier and the control shaft. Two gears are sleeved rotatably on the cylindrical shaft. The key member is engaged within a keyway unit in one of the gears when the control shaft is located at the outer position, and within a keyway unit in the other one of the gears when the control shaft is located at the inner position. As such, the key member is urged by the small compression spring to move smoothly between the keyway units.Type: GrantFiled: June 1, 2000Date of Patent: December 4, 2001Inventor: Liang-Jen Chang
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Patent number: 6065361Abstract: A gear system characterized by providing at least one gear-wheel (58a) about a shaft (34), the shaft (34) having as least one pawl member (84) located therein, the or each pawl member (84) being caused to move into and out of engagement with a gear-wheel (48a) normally rotating freely with respect to the shaft (34) passing therethrough by the positioning of a roving magnet (48) withing the shaft, the engagement of the pawl member (84) with the gear-wheel (48a) thereby causing that gear-wheel (48a) to rotate with the shaft (34).Type: GrantFiled: July 16, 1998Date of Patent: May 23, 2000Assignee: Preload International LimitedInventors: William Wesley Martin, Michell Newton
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Patent number: 5992257Abstract: A mode change switch for a power tool, which switch is moveable between at least two positions corresponding to different operating modes of the tool in which different components of the tool are brought into a meshing engagement. The switch comprises a manually operable driving member moveable between at least two positions in each of which it is adapted to be realizably restrained and a driven member which is adapted to be driven by the driving member between associated positions to directly or indirectly facilitate a change in operating mode. A spring engages between the driving member and driven member, to urge the driven member to follow the movement of the driving member. The switch is arranged so that a first end of the spring abuts a first pair of stop members and a second end of the spring abuts a second pair of stop members. One of each pair of stop members is located on the driving member. And the other of each pair is located on the driven member.Type: GrantFiled: January 13, 1999Date of Patent: November 30, 1999Assignee: Black & Decker Inc.Inventors: Uwe Nemetz, Wolfgang Schonweitz
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Patent number: 5950490Abstract: A multi-clutched transmission system which may be implemented in an automobile or other motor vehicle. A common drive shaft is generally coupled to a number of clutches comprising a number of inner drive portions and a number of outer portions. A number of gears may be provided that are in contact with a selected one of the clutches. A pressurized hydraulic input chamber may move within the system to engage one of the clutches with a particular gear. When a particular one of the clutches is engaged, a specific torque is generated at the output drive shaft.Type: GrantFiled: March 12, 1998Date of Patent: September 14, 1999Inventor: Alfonso Di Stefano
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Patent number: 5850758Abstract: A transmission for self-propelled walking lawn mowers comprising a casing (23); an input shaft (10) extending within the casing (23); an output shaft (13) penetrating the casing (23) and connected to drive wheels; an intermediate shaft (25) connected to the input shaft (10) via a transmission gear mechanism (24); a plurality of drive gears (26) and a plurality of driven gears (28) mounted on the output shaft (13) to mesh with each other; connecting means for connecting a gear selected from the plurality of driven gears (28) to the output shaft (13); and a clutch (27) mounted on the intermediate shaft (25) to engage or disengage the drive gear set (26) with or from the intermediate shaft (25). According to the present invention, the load imposed on the clutch is effectively reduced, thereby increasing the service life of the obtained product.Type: GrantFiled: February 14, 1997Date of Patent: December 22, 1998Assignees: Kanzaki Kokyukoki Mfg., Co., Ltd., Tuff Torq CorporationInventors: Travis McCloud, Hirohiko Kawada
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Patent number: 5689998Abstract: A transmission apparatus for changing the speed of a driven member relative to the speed of a driving member for transmitting effectively continuous torque transfer between the members. The apparatus includes cam gears driven by a driving member, driven gears in continuous engagement with the cam gears, and a driven member which journals the driven gears for rotation. One section of the driving member is hollow and has a plurality of radially extending apertures, each containing a reciprocating detent for engaging an inner cam surface of a corresponding cam gear. A shift member mounts within a bore of the driving member and rotates about the longitudinal axis of the driving member to cause the detents to reciprocate between a cam gear engaged position and a disengaged position.Type: GrantFiled: July 15, 1994Date of Patent: November 25, 1997Assignee: The Anchored CorporationInventor: Gary D. Lee
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Patent number: 5601000Abstract: A gearbox for self-propelled machines such as lawn-mowers, comprising a frame within which are disposed a primary shaft (1) provided with a gear train (8) of this latter, and a secondary shaft (2) provided with a gear train (9) that is free about the secondary shaft (2). Each gear (8) of the primary shaft (1)is maintained in permanent engagement with a gear (9) of the secondary shaft (2). The primary shaft (1) is driven in rotation by an endless screw (7), in engagement with a toothed wheel (4), by a cone clutch whose cones (3) are mounted slidably upon and kinematically freely and come into engagement with the conical bearing surfaces of the driven member. The movement of rotation of the primary shaft (1) is transmitted to the secondary shaft (2) by a movable key (12) mounted on the secondary shaft.Type: GrantFiled: September 12, 1994Date of Patent: February 11, 1997Inventor: Robert Blanchard
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Patent number: 5592855Abstract: A shift key mechanism using a lateral pivot riding on milled ridges on the outer surface of a shift shaft in order to index a spring biased shift key to a gear location.Type: GrantFiled: January 16, 1996Date of Patent: January 14, 1997Assignee: MTD Products Inc.Inventors: Mike Weirich, Kurt E. Vogt
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Patent number: 5560250Abstract: A variable speed mechanism includes a drive shaft, a plurality of drive gears each fixedly mounted around the drive shaft, a plurality of driven gears each respectively meshing with a corresponding one of the drive gears, a plurality of single direction needle bearings each fixedly mounted in a corresponding one of the plurality of driven gears, a driven shaft mounted in the plurality of single direction needle bearings, an elongated sleeve slidably mounted around the driven shaft, the elongated sleeve being slidable on the driven shaft between a first position where an enlarged free end thereof is fitted into a corresponding one of the single direction needle bearings such that the elongated sleeve is rotated by the associated driven gear, thereby rotating the driven shaft therewith, and a second position where the enlarged free end thereof is not in contact with any one of the single direction needle bearings such that the elongated sleeve and the driven gear stop rotating, a rack slidably mounted in parallType: GrantFiled: March 7, 1995Date of Patent: October 1, 1996Inventor: Jung-Lin Hua
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Patent number: 5537888Abstract: A constant-mesh manual/automatic transmission is disclosed. The transmission comprises a set of drive gears and a set of driven gears wherein each of drive gears constantly meshes with its counterpart of driven gears thereby enabling a plurality of the drive and driven gears to be packed within a reasonably small volume. The plurality of the drive and driven gears provides for a smooth power flow and decrease of energy loss.Type: GrantFiled: October 14, 1994Date of Patent: July 23, 1996Inventor: Pavo Pusic
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Patent number: 5483848Abstract: The invention is directed to a drive mechanism for a kitchen appliance with a drive motor (4), in which a variable-speed transmission (5) provides with an output shaft (14) a tool output for the coupling of tools adapted to be driven by the tool output at two different speeds of rotation at a given motor speed. The output shaft (14) of the variable-speed transmission (5) is axially displaceable and is movable by axial displacement from a first position in which it is coupled to a first gear wheel (18), into a second position in which it is disengaged from the first gear wheel (18), being instead coupled to a second gear wheel (17) or to the motor shaft (25).Type: GrantFiled: March 17, 1994Date of Patent: January 16, 1996Assignee: Braun AktiengesellschaftInventors: Antonio Rebordosa, Jurgen Golob
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Patent number: 5469755Abstract: A multi-speed bicycle hub is combined with an operating mechanism. The operating mechanism is fastened to a hub shaft. In the operating mechanism there is provided a linearly movable operating slide. This operating slide is provided with control tracks. The control tracks act on pivot levers. The pivot levers act on a control rod and a surrounding control tube provided within a hub shaft bore. The control rod and the control tube are in connection with a gear box within the hub sleeve. The control rod and the control tube are secured against being lost, when the hub is not yet combined with the operating mechanism.Type: GrantFiled: May 19, 1993Date of Patent: November 28, 1995Assignee: Fichtel & Sachs AGInventors: Werner Steuer, Eduard Bergles
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Patent number: 5454526Abstract: A low speed gear (6) and a high speed gear (7) are fixed to a spool shaft (5) for rotating a spool (3). A low-speed driving gear (12) engaging with the low speed gear (6) and a high-speed driving gear (13) engaging with the high speed gear (7) are always held in an engagement state on an axially movable handle (9). Further, in the handle shaft (9) is provided an engaging member (14) engaging with engaging parts (10 and 11) respectively formed in the inside of the low-driving gear (12) and the high-speed driving gear (13). The engaging member (14) is selectively engaged with the engaging part (10 or 11) by axially moving the handle shaft (9) so that a fishing line is wound with a winding speed changed to high speed or to low speed.Type: GrantFiled: May 11, 1994Date of Patent: October 3, 1995Assignee: Daiwa Seiko, Inc.Inventor: Kyoichi Kaneko
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Patent number: 5404768Abstract: A speed changing arrangement for the bicycle having a changing arrangement mounted on the frame of the bicycle and positioned between the left and right pedals. The speed changing arrangement generally includes: a speeding changing gear set engaging an output gear set, a gear shifting shaft and a hand lever to manipulate the gear shifting shaft. The hand lever can be utilized to manipulate a neutral gear cable and a gear shifting cable, so that the gear shifting shaft can be moved within a spacing between the speed changing gear set of the desired gear stage and the output gear set.Type: GrantFiled: April 15, 1993Date of Patent: April 11, 1995Inventors: Tan J. Hwang, Chin K. Lo
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Patent number: 5400671Abstract: A side shifting mechanism for a transaxle includes a shift shaft which is rotatably mounted about an axis which is parallel to the axes of the drive axles. A portion of the shift shaft extends out the side of the transaxle to a location where it can be conveniently grasped by an operator. The shift shaft cooperates with a detent plate located within the transaxle. The detent plate is pivotably mounted on a pivot shaft. Rotation of the shift shaft causes pivoting movement of the detent plate about the pivot shaft. The detent plate is connected to an axially movable shifting collar. The relative position of the collar determines which of a plurality of gear ratios of the transaxle is selected for use. Thus, by rotating the shift shaft, the operator can select a desired gear ratio. In a first embodiment of the invention, the shift shaft and the detent plate are formed having cooperating bevel gear portions.Type: GrantFiled: August 22, 1990Date of Patent: March 28, 1995Assignee: Dana CorporationInventors: James E. Hall, James H. Bostic, Timothy L. Teeter, R. Donald McGuire
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Patent number: 5305651Abstract: A mechanical transmission (10) in particular for toy automobiles includes a substantially cylindrical element (19) rotating axially in kinematic connection with the motion output (22) of the transmission. On the cylindrical element (19) there are fitted in a rotating manner toothed gears (17, 18) each of which is in kinematic connection at a different ratio with the motion input of the transmission. Inside the cylindrical element (19) a cursor (24) is axially sliding between the gears (17, 18) for selective sequential radial engagement between the cylindrical element (19) and the gears (17, 18) so as to realize motion transmission with a different ratio between input and output through selection of engagement between the cylindrical element and a gear.Type: GrantFiled: August 26, 1993Date of Patent: April 26, 1994Assignee: Peg Perego Pines, S.p.A.Inventor: Gianluca Perego
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Patent number: 5300090Abstract: A multiple movement exercising machine is powered by an electric drive motor which is used to effect movement of various exercising components. The drive motor drives a shaft on which a plurality of pulleys are rotationally mounted. A selector arrangement is used to connect a selected one of the pulleys within the shaft so that the pulley rotates with the shaft and drives an exercising component linked to that pulley by a belt. One end of the machine is preferably pivotable relative to the remainder of the machine about a vertical pivot axis. The extent of pivotal movement is preferably selectably variable.Type: GrantFiled: September 3, 1992Date of Patent: April 5, 1994Assignee: Challenge Machinery (Proprietary) Ltd.Inventor: Heinrich L. Primic
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Patent number: 5287769Abstract: The present invention is a transaxle with an offset shaft thereby having a reduced profile. The transaxle includes an upper housing and a lower housing defining a split line. A vertical input shaft and an axle shaft are rotatably disposed in the housing. A shift shaft is rotatably disposed within the housing and operably connected to the input shaft. Gears on the shift shaft mesh with gears on a counter shaft to transmit rotational motion from the one input shaft to the axle shaft. The axle shaft is disposed in a first generally horizontal plane and the shift shaft is disposed in a second generally horizontal plane below the first generally horizontal plane to reduce the profile of the transaxle.Type: GrantFiled: July 2, 1992Date of Patent: February 22, 1994Assignee: Tecumseh Products CompanyInventor: Roland L. von Kaler
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Patent number: 5214974Abstract: The invention relates to a central shaft (7) with desmodromic channels, coaxial and internal to a driven shaft (1), slidable in the two directions and exhibiting a plurality of longitudinal grooves (8) inside which, for every second cogged wheel (2) a corresponding plurality of heads (9a) of pivots (9) are housed and blocked, which pivot heads (9a) are destined to exit, with their free end and on a longitudinal sliding action of the said central shaft (7), from corresponding radial seats (10) realized on the said driven shaft (1); to key each single cogged wheel (2) to the said driven shaft (1), locking means (11) are envisaged in rotation, arranged on each second cogged wheel (2) and acting on each pivots (9) which exits.Type: GrantFiled: April 1, 1992Date of Patent: June 1, 1993Assignee: Morbidelli S.p.A.Inventor: Giancarlo Morbidelli
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Patent number: 5211067Abstract: The present invention is a transmission having a two part shift shaft. The spur gear supporting portion of the shift shaft is received by bearings of the housing at its two ends and is made of a relatively strong material for supporting the load of the spur gears. One of the bearings is formed in an internal wall of the housing to support the proximal end of the shift shaft. The shift collar supporting portion of the shift shaft supports the shift collar and is axially aligned with the gear supporting portion. A projection of the shift collar supporting portion engages a recess in the gear supporting portion to axially align and properly position the shift collar for operation of the shifting mechanism. The shift collar supporting portion is made of a less expensive material than the gear supporting portion, thus reducing the overall cost of the transmission.Type: GrantFiled: March 6, 1992Date of Patent: May 18, 1993Assignee: Tecumseh Products CompanyInventor: Roland L. von Kaler
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Patent number: 5183138Abstract: The present invention is a parking brake for a transmission or transaxle. The parking brake includes a parking block made of a material stronger than the housing and having keyways for engaging and locking the shift keys of the transmission. The parking block is located in recesses in the housing halves and is thereby prevented from rotating. By engaging the non-rotatable parking block, the shift keys are prevented from rotating and thereby prevent the rotation of the shift shaft and transmission of that motion to the axles.Type: GrantFiled: January 23, 1992Date of Patent: February 2, 1993Assignee: Tecumseh Products CompanyInventor: Norman E. Jolliff
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Patent number: 5149308Abstract: A transmission comprising a change speed mechanism and a differential housed in a transmission case. The change speed mechanism includes drive gears mounted on a transmission shaft, and driven gears meshed with drive gears. The differential includes a differential case having elongated axle-bearing bosses extending to inside walls of the transmission case. The driven gears are mounted on one of the elongated bosses to be rotatable therewith. The differential case is supported by rear wheel axles extending through the transmission case and the elongated bosses.Type: GrantFiled: February 28, 1992Date of Patent: September 22, 1992Assignee: Kubota, Ltd.Inventors: Norimi Nakamura, Tadao Adachi, Akio Matsui, Kouji Fujiwara, Mitsugu Kobayashi, Tetsuo Yamaguchi, Minoru Fukuda
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Patent number: 5142944Abstract: Back exercise apparatus has a seat and a footrest, with a first backrest pivotable about a horizontal first axis for biasing the upper portion of a person on the seat about the first axis, and a second backrest pivotable about a vertical second axis for biasing the upper portion of the person about the second axis. A gearbox selectively connects a drive to either backrest and has an input shaft connected to the drive, a pair of output shafts parallel to the input shaft and a selector for connecting the input shaft to a selected one of the output shafts for rotating the selected output shaft in either direction of rotation.Type: GrantFiled: September 10, 1991Date of Patent: September 1, 1992Assignee: Baltimore Therapeutic Equipment Co.Inventors: James A. McArthur, David C. Short
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Patent number: 5109722Abstract: A variable speed, draw key transmission having a number of gears of different gear ratios rotatably journalled on a shaft. The shaft includes a keyway containing a slidable key that may be selectively moved between the gears to change the output speed of the transmission. The key includes a bump and the keyway a series of notches forming a detent for indicating to the operator the gear engaging positions of the key.Type: GrantFiled: January 12, 1990Date of Patent: May 5, 1992Assignee: The Toro CompanyInventors: Donald L. Hufnagle, Steven J. Svoboda
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Patent number: 5099713Abstract: A transaxle or gear drive unit with an improved shift mechanism and gear drive is set forth. The shift mechanism is of the shift key type and certain gears have recesses to receive a lug of the shift key with the recesses having ramps which depress the lug when the key is shifted. One of the gears has a smooth bore adjacent the recesses to serve as a neutral position for the shift key. A wide gear having teeth or splines around its periphery extending the length thereof is rotatably mounted on one shaft of the gear drive unit. The wide gear has a plurality of additional gears affixed thereto for simultaneous rotation. The wide gear extends beyond the additional gears and connects with a forward speed gear and a reverse gear on another shaft. The wide gear thus functions as a mechanical connection for the additional gears as well as serving as a gear itself.Type: GrantFiled: July 27, 1989Date of Patent: March 31, 1992Assignee: Dana CorporationInventor: Douglas F. Edwards
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Patent number: 5094121Abstract: The present invention is a small transmission for riding lawn mowers and the like. The transmission includes a detent arrangement which aids the operator while shifting the transmission gears. The detent arrangement includes detent recesses which are formed in the casting of the housing, and a biased detent mechanism mounted on the shift fork of the transmission. The biased detent mechanism includes a projection on the shift fork which receives a spring and nose cone. The spring urges the nose into the detent recesses so that the shifting mechanism holds the transmission in the selected gear, and provides a positive feel of the changing gears. Alternatively, a spring biased ball may be mounted on the shift fork to engage the detent recesses.Type: GrantFiled: August 1, 1991Date of Patent: March 10, 1992Assignee: Tecumseh Products CompanyInventor: Roland L. von Kaler
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Patent number: 5063794Abstract: The present invention is an improved key for an in-line transmission. The key is located within a channel in the shift shaft and selectively engages keyways of gears disposed about the shift shaft. A shift fork and collar axially move the key within the shift shaft by engaging and moving the base of the key. The key includes a shoulder which connects the head and the shank portion of the key, with the shoulder being thicker than the shank to cause more of the key to be supported within the shift shaft channel and thereby the key is better able to withstand the shearing forces which result from the rotational coupling of the shift shaft and the gears. The shoulder includes the portion of the key which extends out of the channel to the keyway and connects with the head, and which also faces the same direction as the head.Type: GrantFiled: April 19, 1991Date of Patent: November 12, 1991Assignee: Tecumseh Products CompanyInventor: Roland L. von Kaler
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Patent number: 5058447Abstract: A change-speed construction for a fishing reel. The construction has a cylindrical shaft for transmitting force from a handle arranged at an outer end position, a first gear rotatably fitted on the cylindrical shaft for high-speed winding, a second gear rotatably fitted on the cylindrical shaft for low-speed winding. The construction further has an engaging element for engaging either the first gear or the second gear for transmitting power from the cylindrical shaft, with the engaging element being slidable along an axis of the cylindrical shaft, an anti-slant portion having a slanting motion thereof restricted relative to the cylindrical shaft, and a posture maintaining mechanism including a portion attached to the anti-slant portion and a further portion attached to the engaging element. These portions come into sliding contact with either each other for preventing slant or `twist` of the engaging element.Type: GrantFiled: November 30, 1990Date of Patent: October 22, 1991Assignee: Shimano Industrial Company LimitedInventor: Takeshi Ikuta
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Patent number: 5000056Abstract: A gear drive unit with an internal disc brake is disclosed. The brake disc is mounted for non-rotatable movement on a driven shaft in a housing of the drive unit. The housing has internal pockets for holding brake pucks at sides of the brake disc. An actuating member mounted in the housing moves one puck toward the disc when the member is rotated in a pre-selected direction. An adjustable spacer is located on the opposite side of the other brake puck and positions and backs up that puck adjacent the other side of the brake disc. The adjustment can be made outside the housing without the use of special tools. The internal brake has fewer parts, is easier to assemble, is not contaminated by dirt, leaves, and grass clippings, and the like, is not subject to damage, and does not present a possible source of injury to an operator or a child.Type: GrantFiled: July 27, 1989Date of Patent: March 19, 1991Assignee: Dana CorporationInventors: Paul A. Crawford, James E. Hall
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Patent number: 4966574Abstract: A transaxle having five forward speeds and reverse includes a shift shaft on which are journalled for free rotation four forward speed change gears and an input bevel gears which is integrally conjoined with a first speed change gear. A reverse gear is also journalled for free rotation on the shift shaft and a neutral spacer is disposed between reverse gear and the four forward gears. A counter shaft carries five companion spur gears in constant running mesh with the forward speed change gears. One of the companion gears is also in constant running mesh with a reverse intermediate gear which is in constant running mesh with the reverse gear. The reverse intermediate gear is supported by a half-bearing in the transaxle housing. A pair of axially slidable and radially outward biased shift keys on the shift shaft selectively couple the forward speed change gears, the input bevel gear, and the reverse gear to the shift shaft.Type: GrantFiled: June 6, 1989Date of Patent: October 30, 1990Assignee: Tecumseh Products CompanyInventors: Roland L. von Kaler, Rocky H. Page
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Patent number: 4932278Abstract: Speed-change shaft (12) of a key-shift transmission mechanism (15) is divided axially into hollow first and second shaft halves (21, 23) through which one (14) of co-axially disposed wheel axles (13, 14) extends. A plurality of speed-change gears (17F.sub.1 -17F.sub.5) are rotatably mounted on the first shaft half (21), whereas a shifter sleeve (22) for shifting a gear-coupling shift key (19) is slidably mounted on the second shaft half (23). A brake drum (25) including therein an aperture (25a) for passing the shift key is sandwiched between and engaged to the shaft halves for providing a vehicle-braking brake (24) within the casing (10). The second shaft half (23) may preferably be made of a polymer material for cost- and weight-reducing purposes. A key-receiving axial groove (18) may be formed in each of the shaft halves (21, 23) with ease because of a shortness of such each shaft half.Type: GrantFiled: May 5, 1989Date of Patent: June 12, 1990Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventor: Shusuke Nemoto
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Patent number: 4907466Abstract: A multi-speed transmission with a shift mechanism which selectively couples at least a forward and a reverse gear operatively positioned on a shaft. The shift mechanism is disposed entirely within the transmission housing and includes a shift key arranged for sliding movement of the key in the shaft. An improved neutral collar is positioned on the shaft between the forward and the reverse gears. The neutral collar has its widest cross section centrally located thereto. From this widest central cross section, the neutral collar profile tapers along the inside surface thereof to relatively narrow cross section at each end thereof.Type: GrantFiled: August 25, 1988Date of Patent: March 13, 1990Assignee: Deere & CompanyInventor: John B. Kuhn
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Patent number: 4867392Abstract: A speed changing device is provided for a fishing reel, which includes a first low speed gear engageable with a second low speed gear, a first high speed gear engageable with a second high speed gear, a shifter for selectively transmitting rotation of a handle shaft to the first low speed gear or the first high speed gear, and a wait mechanism having first and second springs which function so that, when the shifter is hindered from moving during the operation of the operating member, the movement of the shifter is temporarily delayed, and, when the hindrance is eliminated, the shifter automatically engages with the first low speed gear or the first high speed gear.Type: GrantFiled: April 8, 1988Date of Patent: September 19, 1989Assignee: Shimano Industrial Company LimitedInventor: Jun Sato